get scrollbar width

by flyingsheep

JavaScript

var scrollbarWidth = 0;

$("<div/>")
    .css({
        width: '100px',
        height: '100px',
        overflow: 'scroll',
        position: 'absolute',
        top: '-200%',
    })
    .appendTo(document.body)
    .each(function () {
        scrollbarWidth = this.offsetWidth - this.clientWidth;
    })
    .remove();

document.body.textContent = scrollbarWidth;